Strut bearing with high lubrication effect

Abstract

The utility model discloses a strut bearing with a high lubrication effect. The strut bearing comprises an upper shell, a lower shell and an antifriction gasket ring, the upper shell comprises an upper shell body and an inclined face arranged on the upper shell body. And the included angle between the inclined plane and the central axis of the upper shell on the cross section along the arrangement direction of the upper shell and the lower shell is an acute angle. The lower shell comprises a lower shell body and a containing groove formed in the lower shell body. The antifriction gasket ring is contained in the containing groove, and the antifriction gasket ring is integrally formed. According to the strut bearing, the requirements of axial and radial loads of the strut bearing can be met, meanwhile, material waste can be reduced as much as possible, the lubricating effect can be improved due to the arrangement of the multiple oil storage grooves, and the service life of the strut bearing is further prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile parts, in particular to a strut bearing with high lubrication effect. Background Art

[0002] As is well known, in the strut suspension used for the front wheels of a four-wheel vehicle, a strut assembly inserted into an outer cylinder of a main shaft and a coil spring are provided in a hydraulic shock absorber. When the strut assembly rotates together with the coil spring during a steering operation, there are forms in which the piston rod of the strut assembly rotates and forms in which the piston rod does not rotate. However, in any form of strut suspension, it is necessary to ensure that the strut assembly can rotate smoothly. Therefore, a bearing needs to be provided on the strut assembly.

[0003] The upper end of the suspension bearing is usually connected to the vehicle body through a top connection plate. The force from the wheel is transmitted to the vehicle body through the coil spring and the suspension bearing. Therefore, the suspension bearing needs to be able to bear both axial force and radial force. The structure of the suspension bearing usually includes a bearing upper cover connected to the top connection plate, a bearing lower cover directly or indirectly connected to the coil spring, and a rolling component located between the upper and lower covers. There is also a commonly used suspension bearing structure. In addition to the upper cover and the lower cover, a horizontally arranged annular plastic sheet is provided. The bearing lower cover and the plastic sheet can rotate relative to the upper cover around the axis. This type of suspension bearing is inexpensive.

[0004] In the above-mentioned suspension bearing in the prior art, since only an annular plastic sheet is provided, only one surface can be rubbed during friction, reducing the service life of the plastic sheet, and thus reducing the service life of the entire suspension bearing. In addition, the plastic sheet is generally punched and cut from a whole plastic plate, and the material waste rate is relatively large, thus increasing the cost of the entire product and being not conducive to popularization. Summary of the Utility Model

[0005] In view of this, the utility model provides a strut bearing with high lubrication effect that can avoid the above problems.

[0006] A strut bearing with high lubrication effect, which comprises an upper shell, a lower shell connected to the upper shell, and an antifriction gasket ring disposed between the upper shell and the lower shell. The upper shell includes an upper housing, and an inclined surface disposed on the upper housing and facing the lower shell. The included angle between the inclined surface and the central axis of the upper housing is an acute angle in a cross-section along the arrangement direction of the upper shell and the lower shell. The lower shell includes a lower housing, and a receiving groove disposed on the lower housing and facing the lower housing. The receiving groove is rectangular in a cross-section along the arrangement direction of the upper shell and the lower shell, and the length of the rectangle is parallel to the inclined surface. The antifriction gasket ring is received in the receiving groove, and the antifriction gasket ring is integrally formed.

[0007] Further, the upper shell and the lower shell are made of thermoplastic plastic.

[0008] Further, the included angle between the length of the rectangle and the central axis of the upper housing is also an acute angle, and the magnitude of this acute angle is equal to the magnitude of the included angle between the inclined surface and the central axis of the upper housing.

[0009] Further, the magnitude of the acute angle is between 35 degrees and 73 degrees.

[0010] Further, the antifriction gasket ring is a flat structure made of thermoplastic material or thermosetting material.

[0011] Further, the antifriction gasket ring is formed by injection molding, and a plurality of oil storage grooves are provided on the antifriction gasket ring at intervals.

[0012] Further, the antifriction gasket ring is a multi-layer structure made of a metal substrate combined with a low-friction coefficient and wear-resistant non-metallic layer, and the non-metallic layers are provided on both sides of the metal substrate.

[0013] Further, the antifriction gasket ring is formed by a curling process, and a plurality of oil storage grooves are provided on the antifriction gasket ring at intervals.

[0014] Further, each of the oil storage grooves has an opening, and the opening is located on the inner side wall or the outer side wall of the antifriction gasket ring.

[0015] Further, the high-performance thrust bearing further includes a protective rubber shell covering the outer sides of the upper shell and the lower shell. The protective rubber shell not only covers the outer side of the upper shell facing away from the lower shell, but also covers the side walls of the lower shell facing away from the central axis of the upper and lower housings and a part of the side walls of the housing facing away from the upper shell.

[0016] Compared with the prior art, the strut bearing with high lubrication effect provided by the present utility model has an inclined surface provided on the upper shell and a receiving groove inclinedly provided on the lower shell, so that the antifriction gasket ring received in the receiving groove is also inclinedly arranged, thereby meeting the requirements of the strut bearing for axial and radial loads. At the same time, the antifriction gasket ring can be made by injection molding and coiling, so that material waste can be minimized as much as possible. In addition, by providing a plurality of oil storage grooves on the antifriction gasket ring, the lubrication effect can be improved, and the service life of the strut bearing can be further extended. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 FIG. is an exploded structural schematic diagram of a strut bearing with high lubrication effect provided by the present utility model.

[0018] Figure 2 is Figure 1 a sectional structural schematic diagram of the strut bearing with high lubrication effect.

[0019] Figure 3 is Figure 1 a structural schematic diagram of the antifriction gasket ring of the strut bearing with high lubrication effect. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The following further details the specific embodiments of the present utility model. It should be understood that the description of the embodiments of the present utility model herein does not limit the protection scope of the present utility model.

[0021] As Figures 1 to 3 shown, it is a structural schematic diagram of a strut bearing with high lubrication effect provided by the present utility model. The strut bearing with high lubrication effect includes an upper shell 10, a lower shell 20 buckled on the upper shell 10, an antifriction gasket ring 30 clamped between the upper shell 10 and the lower shell 20, and a protective rubber shell 40 covering the outer sides of the upper shell 10 and the lower shell 20. It can be imagined that the strut bearing with high lubrication effect further includes some other functional modules, such as assembly components, installation components, lubricating grease, etc., which are well-known technologies to those skilled in the art and will not be described in detail herein one by one.

[0022] The upper shell 10 includes an upper housing body 11 and an inclined surface 12 disposed on the upper housing body 11 and facing the lower shell 20. The upper housing body 11 is in a circular ring shape, which can be integrally formed by injection molding. Its material can be a hard engineering plastic, such as being injection molded from thermoplastic, or it can also be made of high-strength aluminum alloy. In the cross-section along the arrangement direction of the upper shell 10 and the lower shell 20, the angle between the inclined surface 12 and the central axis of the upper housing body 11 is an acute angle. The size of the acute angle is between 35 degrees and 73 degrees. The function of the inclined surface 12 and the reason for setting the size of the acute angle will be described below in conjunction with the lower shell 20 and the antifriction gasket group 30.

[0023] The lower shell 20 includes a lower housing body 21, a receiving groove 22 disposed on the lower housing body 21 and facing the lower housing body, and an abutting ring 23 disposed on the lower housing body 21 and extending towards the upper shell 10. The lower housing body 21 is also in a circular ring shape, and its material can also be a hard engineering plastic, such as being injection molded from thermoplastic such as high-strength polyurethane. Of course, it can also be made of metal. Since the lower shell 20 is in a ring shape, the receiving groove 22 should also be an annular groove. In the cross-section along the arrangement direction of the upper shell 10 and the lower shell 20, the receiving groove 22 is rectangular, and the length of the rectangle is parallel to the inclined surface 12, that is, the angle between the length of the rectangle and the central axis of the upper housing body 11 is also an acute angle. The size of this acute angle is equal to the size of the angle between the inclined surface 12 and the central axis of the upper housing body 11. Since the receiving groove 22 is inclined, the antifriction gasket ring 30 can meet the axial and radial loads of the strut bearing, because in the actual use process, there cannot be only axial external forces, and there must also be radial external forces, such as when the vehicle sways or bumps left and right. When the upper shell 10 and the lower shell 20 are buckled together, the annular inner side wall of the upper shell 10 abuts against the abutting ring 23, and when the protective rubber shell 40 covers the outside of the upper shell 10 and the lower shell 20, the protective rubber shell 40 and the abutting ring 23 clamp the upper shell 10 therebetween to achieve the purpose of fixing the relative positions of the upper shell 10 and the lower shell 20 in the radial direction.

[0024] The antifriction gasket ring 30 can be a flat structure made of thermoplastic material or thermosetting material. Therefore, preferably, when the antifriction gasket ring 30 is made of thermoplastic material or thermosetting material, it can be formed by injection molding, such as Figure 1As shown, the antifriction gasket ring 30 is an annular structure, and corresponding-sized antifriction gasket rings can be injection-molded according to the required dimensions. Since it is injection-molded in one step, it can also achieve the purpose of reducing material waste. A plurality of oil storage grooves 31 are arranged at intervals on the antifriction gasket ring 30. The number and interval distance of the oil storage grooves 31 can be designed according to actual needs, which will not be elaborated here. To improve the lubrication ability, the oil storage groove 31 is a kidney-shaped hole, and the long side direction of the kidney-shaped hole is parallel to the radial direction of the antifriction gasket ring 30. The thermoplastic material or thermosetting material should be a material with a low friction coefficient and high wear resistance. Specifically, the thermoplastic material includes but is not limited to one of POM, PA, PPS, PES, PEEK, PE I, PAI, or a composite wear-resistant material containing one of these materials. The thermosetting material includes but is not limited to one of PTFE, PI, phenolic resin, epoxy resin, or a composite wear-resistant material containing one of these materials.

[0025] The antifriction gasket ring 30 can also be a multi-layer structure made of a metal substrate combined with a wear-resistant non-metallic layer with a low friction coefficient. When the antifriction gasket ring 30 is made of a metal substrate combined with a wear-resistant non-metallic layer with a low friction coefficient, the wear-resistant non-metallic layer is arranged on both sides of the metal substrate. Since the antifriction gasket ring 30 has a metal substrate and cannot be manufactured by injection molding, punching will cause great waste. Therefore, during production, first, a metal strip is blanked. It can be imagined that the oil storage groove 31 can be blanked when the metal strip is blanked. Then, wear-resistant non-metallic layers with a low friction coefficient are prepared on both sides of the metal strip, and the preparation method can be processes such as bonding or sintering. Finally, according to the circumferences of the inner and outer circles of the antifriction gasket ring 30, a section of material is cut and rolled into a circle. To adapt to the requirements of this rolling, that is, when rolling, the side where the outer diameter is located may be extended, and the side where the inner diameter is located may be compressed or even folded. To avoid this phenomenon, the oil storage groove 31 is an open groove, as Figure 3 As shown, the opening of the oil storage groove 31 faces the inner side of the annular antifriction gasket ring 30. Of course, the opening of the oil storage groove 31 can also face the outer side of the annular antifriction gasket ring 30. Thus, when rolling, the open end of the oil storage groove 31 can be squeezed or opened, thereby avoiding the side on the inner diameter side from being compressed or the side on the outer diameter side from being extended, resulting in a decline in product quality. The metal substrate includes but is not limited to low-carbon steel plates, stainless steel plates, copper plates, etc. The wear-resistant non-metallic layer includes but is not limited to one of POM, PA, PPS, PES, PEEK, PE I, PAI, PTFE, PI, phenolic resin, epoxy resin, or a composite wear-resistant material containing one of these materials. The wear-resistant non-metallic layer is arranged on both sides of the metal substrate.

[0026] The inner diameter and outer diameter of the annular anti-friction gasket ring 30 can be respectively equivalent to the inner diameter and outer diameter of the annular accommodation groove 22, so that the anti-friction gasket ring 30 can be placed in the accommodation groove 22. At the same time, when the upper shell 10 and the lower shell 20 are combined together, in the cross-section along the arrangement direction of the upper shell 10 and the lower shell 20, the height h of the accommodation groove 22 is greater than the thickness of the anti-friction gasket ring 30 but less than 1.2 times the thickness of the anti-friction gasket ring 30. The size of the acute angle is between 35 degrees and 73 degrees. If the size of the acute angle is less than 35 degrees, the effect of bearing the radial load is not obvious. If the size of the acute angle is greater than 73 degrees, its ability to bear the axial load will be affected. In addition, it should be noted that since the height h of the accommodation groove 22 is greater than the thickness of the anti-friction gasket but less than 1.2 times the thickness of the anti-friction gasket, during use, the anti-friction gasket group 30 and the inclined surface 12 of the upper shell 10 are in a virtual contact state. In reality, lubricating grease will be filled between the anti-friction gasket group 30 and the inclined surface 12 of the upper shell 10.

[0027] The protective rubber shell 40 can be made of fluororubber and, through the overmolding process, is not only coated on the outer side of the upper shell 10 facing away from the lower shell 20, but also coated on the side wall of the lower shell 20 facing away from the central axis of the upper and lower shells 11, 21 and on a part of the side wall of the shell 20 facing away from the upper shell 10, so as to fix the relative positions between the upper and lower shells 10, 20, and at the same time, it is also beneficial to improve the sealing performance between the upper and lower shells 10, 20. Therefore, the shape of the protective rubber shell 40 is determined by the outer shapes of the upper and lower shells 10, 20.

[0028] In addition, it can be understood that in order to improve the sealing performance of the strut bearing, a sealing ring (not shown) can be provided between the protective rubber shell 40 and the side wall of the lower shell body 21, and between the abutting ring 23 of the lower shell 20 and the inner side wall of the upper shell 10. This is prior art and will not be elaborated here.

[0029] Compared with the prior art, the strut bearing with high lubrication effect provided by the present utility model has the inclined surface 12 provided on the upper shell 10 and the accommodation groove 22 inclinedly provided on the lower shell 20, so that the anti-friction gasket ring 30 accommodated in the accommodation groove 22 is also inclinedly arranged, so as to meet the requirements of the axial and radial loads of the strut bearing. At the same time, the anti-friction gasket ring 30 can be made by injection molding and rolling, so that material waste can be minimized as much as possible. In addition, by providing a plurality of oil storage grooves 31 on the anti-friction gasket ring 30, the lubrication effect can be improved, and the service life of the strut bearing can be further extended.

[0030] The above are only the preferred embodiments of the present utility model, and are not used to limit the protection scope of the present utility model. Any modifications, equivalent replacements or improvements within the spirit of the present utility model are all covered within the scope of the claims of the present utility model.

Claims

1. A strut bearing with high lubrication effect, characterized in that: The strut bearing with high lubrication effect includes an upper shell, a lower shell connected to the upper shell, and an antifriction gasket ring disposed between the upper shell and the lower shell. The upper shell includes an upper housing body, and an inclined surface disposed on the upper housing body and facing the lower shell. The angle between the inclined surface and the central axis of the upper housing body is an acute angle in a cross-section along the arrangement direction of the upper shell and the lower shell. The lower shell includes a lower housing body, and a receiving groove disposed on the lower housing body and facing the lower housing body. The receiving groove is rectangular in a cross-section along the arrangement direction of the upper shell and the lower shell, and the length of the rectangle is parallel to the inclined surface. The antifriction gasket ring is received in the receiving groove, and the antifriction gasket ring is integrally formed.

2. The strut bearing with high lubrication effect according to claim 1, characterized in that: The upper shell and the lower shell are made of thermoplastic plastic.

3. The strut bearing with high lubrication effect according to claim 1, characterized in that: The angle between the length of the rectangle and the central axis of the upper housing body is also an acute angle, and the magnitude of this acute angle is equal to the magnitude of the angle between the inclined surface and the central axis of the upper housing body.

4. The strut bearing with high lubrication effect according to claim 1, characterized in that: The magnitude of the acute angle is between 35 degrees and 73 degrees.

5. The strut bearing with high lubrication effect according to claim 1, characterized in that: The antifriction gasket ring is a flat structure made of thermoplastic material or thermosetting material.

6. The strut bearing with high lubrication effect according to claim 5, wherein: The antifriction gasket ring is formed by injection molding, and a plurality of oil storage grooves are provided on the antifriction gasket ring at intervals.

7. The strut bearing with high lubrication effect as described in claim 1, characterized in that: The antifriction gasket ring is a multi-layer structure made of a metal substrate combined with a wear-resistant non-metallic layer with a low friction coefficient, and the non-metallic layers are provided on both sides of the metal substrate.

8. The strut bearing with high lubrication effect according to claim 7, characterized in that: The antifriction gasket ring is made by a curling process, and a plurality of oil storage grooves are provided on the antifriction gasket ring at intervals.

9. The strut bearing with high lubrication effect according to claim 8, characterized in that: Each of the oil storage grooves has an opening, and the opening is located on the inner side wall or the outer side wall of the antifriction gasket ring.

10. The strut bearing with high lubrication effect according to claim 1, characterized in that: The strut bearing with high lubrication effect further includes a protective rubber shell covering the outer sides of the upper shell and the lower shell. The protective rubber shell not only covers the outer side of the upper shell facing away from the lower shell, but also covers the side wall of the lower shell facing away from the central axis of the upper and lower housing bodies and a part of the side wall of the housing facing away from the upper shell.

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